Related Clues:

• Punch need
• Balled-up hand
• It's closed for fighting
• Closed hand
• One of one's dukes
• It's formed when clenched
• Balled hand
• You might make one before a swing
• Clenched weapon
• Boxing-glove insert
• Weapon for 21-Across
• You might make one before taking a swing
• See 4 Down
• *It may be pumped or bumped
• Projecting joint of a finger